IMA

Expand EPR

• Electron Paramagnetic Resonance

• Electric Parametric Resonance

• Electronic Paramagnetic Resonance

• Either option 1 or 3

The technique used for detecting transitional metal ion and their complexes, free radicals and their excited states.

• NMR

• ESR

• MS

• Both ESR and MS

Electron spin resonance is a technique for detecting ?

• Absorption

• Paramagnetism

• Radiation

• Frequency or amplitude

Microwave absorption is measured as a function of ...................... by ESR spectroscopy

• Magnetic field

• Frequency

• Molecule

• Absorption

The source used in EPR is

• Cathode ray

• Klystron

• Krypton

• Argon gas

What is fixed in between the isolator and attenuator to know the frequency of microwaves in ESR

• Wave meter

• Oscillator

• Detector

• Modulation input

What is used to adjust the level of microwave power incident upon the sample?

• Wave meter

• Attenuator

• Isolator

• Detector

The cavity which contains the sample is the heart of ESR

• Sample

• Resonant

• Sample or resonant

• No cavity is present

Unit of magnetic field is

• Gauss

• Hertz

• Decibel

• Meter

The most commonly used detector in ESR is

• Quartz cystal

• Silicon crystal

• Either quartz or sillicon

• No cystal